ADTs, Data Structures, and Problem Solving with C++ 2nd Edition by Larry Nyhoff

Exercise 17

Exercises 8-17 use the following linked list and node pointers p1, p2, p3, and p4:

Draw a similar diagram to show how this configuration changes when the given program segment is executed, or explain why an error occurs.
?p4- next = p3; p4- next- next = p2; p4- next- next- next = p1; p1 = 0;